Purpose :
The mechanisms that cause non-pupillary block complications of plateau iris configuration (PIC) are not understood. We hypothesize that eyes with smaller inter-plicata distance are at risk for developing ‘in the bag’ uveitis-glaucoma-hyphema (UGH) syndrome with a single piece intraocular lens (IOL) implant

Methods :
We performed a retrospective clinical study to compare high resolution ultrasound biomicroscopy (UBM) biometry parameters between PIC cases, primary angle closure (PAC) cases, and controls. This research was conducted in compliance with the “Declaration of Helsinki” and was approved by the institutional review board. A UBM imaging protocol was established to characterize anterior chamber depth (ACD), degree of angle opening (DOA), inter-plicata distance, sulcus-to-sulcus distance, ciliary body thickness, ciliary body area, and iris area. Using one eye of each subject, biometry parameters were analyzed by 1-way ANOVA